The material from a non-woven polypropylene (with a No. 5 recyclable label) reusable shopping bag can be used to make an effective face mask filter.

Fortunately, there are now many mask options for kids, including high-performing cloth masks with built-in filters as well as disposable KN95 and surgical-style masks.

The researchers performed an in-depth analysis of homemade face masks and their ability to filter droplets when a person talks, sneezes, or coughs.